When in an urban survival situation, you need to keep intruders out of your home,fortress, or hideout. Some of these booby traps can be used as a deterrent, and some can be used as a lethal weapon capable of killing. The first and most common use is to put a trap on a door. There are many ways to do this, one, is to tie a string around the doorknob that is tied around the trigger of a gun so when the knob is turned the tension will pull the trigger and shoot at the door. Another way is to put a trip wire behind the door that leads to a large hard object on the ceiling.so when the door is opened it breaks the string and the object comes swinging down. The object can be a board or bat with nails in it, improvise on it and you can make it very deadly.
Another form of a booby trap is a land mine, there is literally 100’s of ways you can make one. An IED is the most common for use in taking out vehicles. Making these is obviously illegal, but it is pretty simple if you have some knowledge in explosives. A personnel land mine can be built for under 50 cents and in less than 10 minutes. You need a shotgun shell, a film cartridge (or any other kind of small cannister a shot gun shell can fit in), a nail, a handsaw(or any thing capable of cutting a nail) and glue(optional). Putting the shotgun shell in is last because of safety reasons. The first step is to cut the nail so that there is only about 1/4-1/2 of an inch remaining,then put it at the center of the cannister.
When this is done, you should make sure the shot gun shell is about 1/4-1 inch longer than the cannister, also that the primer of the shell is resting on the end of the nail. to make it more effective, you should put a stabilizer at the bottom to keep it from tipping over. You should make your stabilizer based of the mini-stove design. You can make one yourself with tin from a tin can, or steel. The way it works is, when some one or some thing steps on the shot gun shell it gets shoved to the bottom where the nail is causing the nail to hit the primer and setting off the shell. The person will end up with a severed/mutilated foot, or if a vehicle goes over it, a flat tire and a large amount of confusion.
If you need to take out vehicles coming on a road, you can make spike strips, or put any other sharp objects to stop the tires. To make a spike strip, you can take a large rope and put nails in them in a triangle shape and glue them in. Also another way to make a spike strip, is to put barbwire down, but try to conceal it with dirt or sand,but thats more sub-urban.
Thats it for this chapter, next chapter will be on food and water. Thank you.